You're being kind of a jerk. Your questions aren't relevant to the information I wanted; you're just picking on me because I brought up something vaguely related.
That having been said:
Yeah, I know about Valentine's day. That's why this was on my mind.
I don't think singlehood will kill my partner or cause him to shun me. (Although if I didn't poke him about cryo, he might cryocrastinate himself to room-temperatureness.) I'm not hoping that anyone will "enforce" anything about my prospective marriage.
My culture encourages permanent and public-facing relationships to be solidified with a party and thereafter called by a different name. In particular, it has caused me to assign value to producing children in this context rather than outside of it. I believe that getting married will affect my primate brain and the primate brains of my and my partner's families and friends in various ways, mostly positive. It will entitle me to use different words, which I want, and entitle me to wear certain jewelry, which I want, and allow me to summarize my inextricability from my partner very concisely to people in general, which I want. It will also allow me to get on my partner's health insurance.
Edit in response to edit: I'm poly, but my style of poly involves a primary relationship (this one). It doesn't seem at all unreasonable to go ahead and promote it to a new set of terms.
Picking on you? You responded to him. You're going out of your way to be offended. You can feel free to not explain your viewpoints, but when someone poses a question don't respond with a throw-away comment and then get annoyed it gets responded to.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.